RESUMEN
BACKGROUND: The National Cancer Institute (NCI) organized the Operational Efficiency Working Group in 2008 to develop recommendations for improving the speed with which NCI-sponsored clinical trials move from the idea stage to a protocol open to patient enrollment. METHODS: Given the many stakeholders involved, the Operational Efficiency Working Group advised a multifaceted approach to mobilize the entire research community to improve their business processes. New staff positions to monitor progress, protocol-tracking Web sites, and strategically planned conference calls were implemented. NCI staff and clinical teams at Cooperative Groups and Cancer Centers strived to achieve new target timelines but, most important, agreed to abide by absolute deadlines. For phase I-II studies and phase III studies, the target timelines are 7 months and 10 months, whereas the absolute deadlines were set at 18 and 24 months, respectively. Trials not activated by the absolute deadline are automatically disapproved. RESULTS: The initial experience is encouraging and indicates a reduction in development times for phase I-II studies from the historical median of 541 days to a median of 442 days, an 18.3% decrease. The experience with phase III studies to date, although more limited (n = 25), demonstrates a 45.7% decrease in median days. CONCLUSIONS: Based upon this progress, the NCI and the investigator community have agreed to reduce the absolute deadlines to 15 and 18 months for phase I-II and III trials, respectively. Emphasis on initiating trials rapidly is likely to help reduce the time it takes for clinical trial results to reach patients in need of new treatments.
Asunto(s)
Ensayos Clínicos como Asunto/normas , Estudios Multicéntricos como Asunto/normas , Ensayos Clínicos como Asunto/métodos , Ensayos Clínicos como Asunto/tendencias , Ensayos Clínicos Fase I como Asunto/normas , Ensayos Clínicos Fase II como Asunto/normas , Ensayos Clínicos Fase III como Asunto/normas , Guías como Asunto , Humanos , Estudios Multicéntricos como Asunto/métodos , Estudios Multicéntricos como Asunto/tendencias , National Cancer Institute (U.S.) , Factores de Tiempo , Estados UnidosRESUMEN
Associations between lung cancer risk and common polymorphisms in the DNA repair genes xeroderma pigmentosum complementation group D (XPD), X-ray repair cross-complementing group 1 (XRCC1), XRCC3 and apurinic/apyrimidinic endonuclease/redox factor 1 were examined within a randomized clinical trial designed to determine whether alpha-tocopherol, beta-carotene, or both would reduce cancer incidence among male smokers in Finland. We found no direct association between lung cancer risk and any of the DNA repair genotypes studied, however, the association between XPD codon 751 genotype and lung cancer was modified by alpha-tocopherol supplementation, and the association between XRCC1 codon 399 genotype and lung cancer was modified by the amount of smoking. Our results suggest that common alterations in single DNA repair genes are not major determinants of lung cancer susceptibility among smokers.